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Start learning 50% faster. Sign in nowLet the age of 'A' and 'C' 5 years hence form now be '5x' years and '7x' years respectively. So, the present age of 'B' = {(5x - 5) X (5/4) } years ATQ, (5x - 5) + (7x - 5) + {(5x - 5) X (5/4) } = 75 Or, 12x - 10 + 6.25x - 6.25 = 75 Or, 18.25x = 75 + 16.25 So, 'x' = (91.25 ÷ 18.25) = 5 So, Age of 'B' 2 years ago from now = 25 - 2 = 23 years Age of 'C' 2 years ago from now = 30 - 2 = 28 years Therefore, required sum = 28 + 23 = 51 years
324² × 36 ÷ 18⁵ × 1120 =?
33 + (6.25) % of 1600 = ? + 2 X 55
11 × 25 + 12 × 15 + 14 × 20 + 15 = ?
9 × 4 ? ÷ 16 = 144
20.05% of 220.05 – 15.15% of 99.99 × 2.02 = ?
Find the value of the given expression.
[76 – {90 ÷ 5 × (24 – 36 ÷ 3) ÷ 3}]
12.5% of 384 - 16.66% of 66 = √16 + √? + 22
√ [? x 11 + (√ 1296)] = 16